US2549367A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of recovering from pyrite the valuabe constituents thereof
Assignee: Noranda Inc
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Filing: 1945-10-25
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Granted: 1951-04-17
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Expires: 1965-10-25
Abstract
No abstract record available.
Inventors
- 👤 Charles W Clark
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 22:54
CPC Classifications
C; C01; C01G; C01G49/00; C01G49/02; C01B; C01B17/00; C01B17/02; C01B17/027; C22; C22B; C22B1/00; C22B1/02
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
124 words
THE METHOD OF RECOVERING FROM PYRITE THE VALUABLE CONSTITUTES THEREOF, COMPRISING THE STEPS OF INTRODUCING SOLELY PYRITE INTO A DISTILLING ZONE OUT OF CONTACT WITH AIR AND PRODUCTS OF COMBUSTION AS SUCH, AND THEREIN CONTINUOUSLY DISTILLING SULFUR THEREFROM TO LEAVE A SOLID RESIDUE BY HEAT SOLELY SUPPLIED EXTERNALLY OF SAID ZONE, CONTINUOUSLY CONDENSING THE GASEOUS SULFUR FROM SAID ZONE AND PASSING THE RESULTING CONDENSATE TO A COLLECTING POINT, CONTINUOUSLY BURNING AT LEAST A PART OF THE SOLID RESIDUE FROM SAID DISTILLING ZONE TO GENERATE HEAT AND TO PRODUCE IRON OXIDE AND SULFUR DIOXIDE, AND PASSING THE GASEOUS PRODUCTS OF COMBUSTION IN INDIRECT HEAT EXCHANGE RELATION TO SAID DISTILLING ZONE SO AS TO SUPPLY HEAT AS AFORESAID WITHOUT CONTAMINATING THE MATERIAL IN THE DISTILLING ZONE.
Claim 2
Independent Claim
124 words
THE METHOD OF RECOVERING FROM PYRITE THE VALUABLE CONSTITUTES THEREOF, COMPRISING THE STEPS OF INTRODUCING SOLELY PYRITE INTO A DISTILLING ZONE OUT OF CONTACT WITH AIR AND PRODUCTS OF COMBUSTION AS SUCH, AND THEREIN CONTINUOUSLY DISTILLING SULFUR THEREFROM TO LEAVE A SOLID RESIDUE BY HEAT SOLELY SUPPLIED EXTERNALLY OF SAID ZONE, CONTINUOUSLY CONDENSING THE GASEOUS SULFUR FROM SAID ZONE AND PASSING THE RESULTING CONDENSATE TO A COLLECTING POINT, CONTINUOUSLY BURNING AT LEAST A PART OF THE SOLID RESIDUE FROM SAID DISTILLING ZONE TO GENERATE HEAT AND TO PRODUCE IRON OXIDE AND SULFUR DIOXIDE, AND PASSING THE GASEOUS PRODUCTS OF COMBUSTION IN INDIRECT HEAT EXCHANGE RELATION TO SAID DISTILLING ZONE SO AS TO SUPPLY HEAT AS AFORESAID WITHOUT CONTAMINATING THE MATERIAL IN THE DISTILLING ZONE.
References Cited (Backward Citations)
US1403576A
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US1731516A
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US2087892A
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US2087894A
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US2087891A
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US2087893A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-04-16 | 1954-10-16 | 1955-04-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-04-16 | 1958-10-16 | 1959-04-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-04-16 | 1962-10-16 | 1963-04-17 | $7700.00 | Window Closed / Lapsed |